@font-face {
  font-family: 'icomoon';
  src: url('../../fonts/introduction/icomoon.eot');
  src: url('../../fonts/introduction/icomoon.eot?or3chs#iefix') format('embedded-opentype'), url('../../fonts/introduction/icomoon.ttf?or3chs') format('truetype'), url('../../fonts/introduction/icomoon.woff?or3chs') format('woff'), url('../../fonts/introduction/icomoon.svg?or3chs#icomoon') format('svg');
  font-weight: normal;
  font-style: normal;
  font-display: block;
}
.banner {
  height: 150px;
  background-image: linear-gradient(to right, #4a197c, #362dad);
}
.banner .box {
  position: relative;
  overflow: hidden;
  padding-top: 11px;
  width: 960px;
  height: 150px;
}
.banner .box .boxleft {
  float: left;
  width: 600px;
}
.banner .box .boxleft .kc {
  width: 80px;
  height: 16px;
  text-align: center;
  font-size: 7px;
  font-family: MicrosoftYaHei;
  font-weight: 400;
  color: #FFFFFF;
}
.banner .box .boxleft .kc span {
  color: #999999;
}
.banner .box .boxleft h1 {
  width: 96px;
  height: 16px;
  font-size: 16px;
  font-family: MicrosoftYaHei;
  font-weight: bold;
  color: #F3F5F7;
}
.banner .box .boxleft .jiage {
  margin-top: 7px;
  width: 150px;
  height: 16px;
  font-size: 8px;
  font-family: MicrosoftYaHei;
  font-weight: 400;
  color: #CA50F8;
}
.banner .box .boxleft .jiage s {
  color: #999999;
}
.banner .box .boxleft .lesson_info {
  margin: 0;
  margin-top: 20px;
  display: flex;
  padding: 10px;
  padding-left: 0px;
  width: 600px;
  align-items: center;
}
.banner .box .boxleft .lesson_info .study_now {
  margin-right: 20px;
  margin-left: 0;
  width: 80px;
  height: 25px;
  line-height: 25px;
  text-align: center;
  background-color: #00A4FF;
}
.banner .box .boxleft .lesson_info .lesson_data {
  display: flex;
}
.banner .box .boxleft .lesson_info .line:not(:last-child)::after {
  content: "";
  width: 1px;
  height: 30px;
  background-color: #999999;
  position: absolute;
  top: 50%;
  right: 5px;
  transform: translateY(-50%);
}
.banner .box .boxleft .lesson_info .lesson_data_item {
  padding: 0px 20px;
  position: relative;
  font-size: 9px;
  font-family: MicrosoftYaHei;
  font-weight: 400;
  color: #DADADA;
}
.banner .box .boxleft .lesson_info .lesson_data_item:hover {
  background-color: #34a5fc;
}
.banner .box .boxleft .lesson_info .lesson_data_item:not(:last-child)::after {
  content: "";
  width: 1px;
  height: 30px;
  background-color: #999999;
  position: absolute;
  top: 50%;
  right: 5px;
  transform: translateY(-50%);
}
.banner .box .box_right {
  float: right;
  margin-right: 132px;
  width: 200px;
  height: 130px;
  margin-left: 10px;
}
.banner .box .box_right .video {
  width: 200px;
  height: 100px;
  background-color: #000000;
  text-align: center;
  line-height: 100px;
}
.banner .box .box_right .video .yuan {
  position: relative;
}
.banner .box .box_right .video .yuan .sanjiao {
  position: absolute;
  top: 35px;
  left: 92px;
  width: 0;
  height: 0;
  border: 20px solid transparent;
  border-left-color: #000000;
}
.banner .box .box_right .tubiao {
  margin-top: 10px;
  height: 14px;
}
.banner .box .box_right .tubiao .box_text::before {
  content: "\e912";
  font-family: 'icomoon';
  float: left;
  margin-left: 9px;
  margin-right: 10px;
  font-size: 8px;
}
.banner .box .box_right .tubiao .box_text {
  float: left;
  width: 150px;
  height: 14px;
  font-size: 7px;
  font-family: MicrosoftYaHei;
  font-weight: 400;
  color: #DADADA;
}
.banner .box .box_right .tubiao .box_text .collect {
  float: left;
  padding-right: 25px;
  border-right: 1px solid #DADADA;
}
.banner .box .box_right .tubiao .box_text .partake_of {
  float: right;
}
.banner .box .box_right .tubiao .weixin {
  font-family: 'icomoon';
  float: left;
  font-size: 8px;
  margin-left: 12px;
}
.banner .box .box_right .tubiao .weixin::after {
  font-family: 'icomoon';
  content: "\e90f";
  margin-left: 5px;
  font-size: 8px;
}
.content {
  position: relative;
  width: 960px;
}
.content .content_nav {
  margin-top: 15px;
  margin-left: 5px;
  margin-bottom: 10px;
  width: 242px;
  height: 15px;
  font-size: 8px;
  font-family: MicrosoftYaHei;
  font-weight: 400;
  color: #666666;
}
.content .content_nav ul {
  width: 250px;
  height: 12px;
  display: flex;
}
.content .content_nav ul li {
  text-align: center;
  flex: 1;
}
.content .content_nav ul .li_blue {
  color: #00A4FF;
}
.content .item {
  display: none;
}
.content .four {
  width: 670px;
}
.content .four li .text {
  position: relative;
  margin-top: 8px;
  height: 100px;
  background: #FFFFFF;
}
.content .four li .text .text_top {
  position: relative;
  padding-top: 15px;
  margin-bottom: 10px;
}
.content .four li .text .text_top h3 {
  margin-left: 40px;
  width: 200px;
  height: 12px;
  font-size: 8px;
  font-family: MicrosoftYaHei;
  font-weight: bold;
  color: #000000;
}
.content .four li .text .text_top i {
  position: absolute;
  right: 0;
  top: 10px;
  width: 40px;
  height: 10px;
  font-size: 7px;
  font-family: MicrosoftYaHei;
  font-weight: 400;
  color: #666666;
}
.content .four li .text p {
  margin-left: 40px;
  width: 630px;
  height: 19px;
  line-height: 19px;
  font-size: 7px;
  font-family: MicrosoftYaHei;
  font-weight: 400;
  color: #999999;
}
.content .four li .text .imgs {
  position: absolute;
  left: 28px;
  top: 12px;
}
.content .four li .text .imgs img {
  width: 6px;
  height: 3px;
}
.content .four li .text .angle {
  transform: rotate(180deg);
}
.content .four li .pull_text {
  display: none;
  margin-top: 10px;
  width: 670px;
  height: 150px;
  font-size: 8px;
  font-family: MicrosoftYaHei;
  font-weight: 400;
  color: #999999;
  background: #FFFFFF;
  line-height: 25px;
}
.content .four li .pull_text img {
  width: 24px;
  height: 12px;
  border: 1px solid #DD560D;
}
.content .four li .pull_text li {
  position: relative;
  margin-left: 40px;
}
.content .four li .pull_text li span {
  position: absolute;
  right: 0;
}
.content .four li .pull_text .last {
  margin-left: 60px;
}
.content .four li .show {
  display: block;
}
.content .check {
  padding-left: 38px;
  padding-top: 10px;
  margin-top: 8px;
  margin-bottom: 8px;
  width: 670px;
  height: 81px;
  background: #FFFFFF;
  font-size: 10px;
  font-family: MicrosoftYaHei;
  font-weight: bold;
  color: #000000;
}
.content .content_right {
  position: absolute;
  top: 0px;
  right: 70px;
  height: 100%;
}
.content .content_right h2 {
  margin-top: 15px;
  margin-bottom: 15px;
  width: 200px;
  height: 10px;
  font-size: 8px;
  font-family: MicrosoftYaHei;
  font-weight: bold;
  color: #00A4FF;
}
.content .content_right .teacher {
  margin-top: 42px;
  width: 200px;
  height: 250px;
  font-size: 6px;
  font-family: MicrosoftYaHei;
  font-weight: 400;
  color: #666666;
  line-height: 10px;
  background: #FFFFFF;
}
.content .content_right .teacher .teacher_top {
  width: 200px;
  height: 100px;
}
.content .content_right .teacher .teacher_top img {
  display: block;
  float: left;
  margin: 10px;
  width: 62px;
  height: 62px;
  border: 1px dashed #666666;
}
.content .content_right .teacher .teacher_top .teacher_name {
  width: 115px;
  margin-top: 18px;
  float: right;
}
.content .content_right .teacher .teacher_top .teacher_name p {
  margin-top: 5px;
  width: 105px;
  height: 56px;
  font-size: 6px;
  font-family: MicrosoftYaHei;
  font-weight: 400;
  color: #666666;
  line-height: 20px;
}
.content .content_right .teacher h4 {
  margin-left: 10px;
  width: 180px;
  height: 22px;
  text-align: center;
  background: #00A4FF;
  font-size: 6px;
  font-family: MicrosoftYaHei;
  font-weight: 400;
  color: #FFFFFF;
  line-height: 22px;
}
.content .content_right .teacher .teacher_text {
  margin-left: 10px;
  margin-top: 10px;
  width: 180px;
  height: 56px;
  font-size: 6px;
  font-family: MicrosoftYaHei;
  font-weight: 400;
  color: #666666;
  line-height: 15px;
}
.content .content_right .accidence {
  margin-top: 10px;
  width: 200px;
  height: 400px;
  background: #FFFFFF;
}
.content .content_right .accidence .accidence_top {
  overflow: hidden;
  width: 200px;
  height: 100px;
  background: url(../../images/introduction/图层\ 164@2x.png);
}
.content .content_right .accidence .accidence_top h4 {
  width: 150px;
  margin-top: 18px;
  margin-left: 20px;
  margin-right: 10px;
  font-size: 15px;
  text-align: center;
  font-family: MicrosoftYaHei;
  font-weight: bold;
  color: #FFFFFF;
}
.content .content_right .accidence .accidence_top p {
  margin-top: 10px;
  margin-bottom: 17px;
  margin-left: 17px;
  width: 150px;
  height: 15px;
  font-size: 7px;
  font-family: MicrosoftYaHei;
  font-weight: 400;
  color: #E9E9E9;
  line-height: 12px;
}
.content .content_right .accidence .accidence_top .score {
  margin-left: 10px;
  width: 180px;
  height: 12px;
  font-size: 7px;
  font-family: MicrosoftYaHei;
  font-weight: 400;
  color: #FFFFFF;
}
.content .content_right .accidence .accidence_top .score ul {
  width: 180px;
  height: 12px;
}
.content .content_right .accidence .accidence_top .score ul .li_left {
  float: left;
}
.content .content_right .accidence .accidence_top .score ul .li_right {
  float: right;
}
.content .content_right .accidence .accidence_bottom {
  width: 200px;
  height: 223px;
  font-size: 7px;
  font-family: MicrosoftYaHei;
  font-weight: 400;
  color: #000000;
}
.content .content_right .accidence .accidence_bottom li {
  margin-left: 15px;
  width: 180px;
  font-size: 7px;
  font-family: MicrosoftYaHei;
  font-weight: 400;
  color: #000000;
  line-height: 28px;
  border-bottom: 1px solid #D7D7D7;
}
